This is your gateway to the set of atomic physics codes
developed at the Los Alamos National Laboratory.

The well known Hartree-Fock method of R.D. Cowan, developed at
Group T-4
of the Los Alamos National Laboratory, is used for the atomic
structure calculations.

Electron impact excitation cross sections are calculated using
either the distorted wave approximation (DWA) or the
first order many body theory (FOMBT).

Electron impact ionization cross sections can be calculated
using the scaled hydrogenic method developed by Sampson and co-workers,
the binary encounter method or the distorted wave method. Photoionization
cross sections and, where appropriate, autoionizations are also
calculated.

On the following pages
you will be able to define the ionization stage of an element and pick the initial and
final configurations. You will be led through a series of web pages ending
with a display of results in the form of cross sections, collision
strengths or rates coefficients. Results are available in tabular
and graphic form.

WARNING - In order to successfuly navigate you must use the radio
buttons to go to and from different pages. Using your browser buttons
may cause incorrect information to be passed to a new page. Please
use the exit button to end the calculations.

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